#include <string>
#include <iostream>
using namespace std;
int main(){
	string str ="Thank you for your smile.";
	string str2="you";
	string str3="me";
	if(str.find(str2)!=string::npos){
		cout << str.find(str2) << endl;
	}
	if(str.find(str2,7) != string::npos){
		cout << str.find(str2,7) << endl;
	}
	if(str.find(str3) != string::npos){
		cout <<str.find(str3) <<endl;
	}else{
		cout << "I know there is no position for me." << endl;
	}
	return 0;
}


